200 Series Stainless Steel
POSZPHT1
The 200 series austenitic stainless steel was developed by replacing Ni elements with Mn and N elements. This steel has good corrosion resistance and hot and cold processing properties, and it can replace 304 products used in indoor, inland cities, and outdoor environments with low corrosiveness.
(1) Features and practical uses
| Steel type | POSZPHT1 |
| Characteristics | After solution treatment, it has high strength, toughness, and wear resistance; economical, low Ni composition ensures the cost advantage. |
| Application | Decorative tubes, industrial tubes, and some shallow-drawn products. Such as shallow processing pots, indoor staircase handrails, elevators, mirror surfaces, brushed surfaces, and other surface-processed products. |
(2) Main chemical composition: (unit: wt%)
| Grade | C | Mn | Cr | Ni | Cu | Other |
| POSZPHT1 | ≤0.10 | 7.0-10.5 | 13.0-17.0 | 0.5-3.0 | 1.0-3.0 | N：0.1-0.3 |
(3) Mechanical properties
| Grade | YS（Mpa） | TS（Mpa） | EL（%） | HV | Remark |
| POSZPHT1 | 426 | 880 | 52 | 224 | 1.0t |
| 304 | 285 | 710 | 58 | 165 | 1.0t |
(4) Use cases
POSZPHT4
The 200 series austenitic stainless steel was developed by replacing Ni elements with Mn and N elements. This steel has good corrosion resistance and hot and cold processing properties, and it can replace 304 products used in indoor, inland cities, and outdoor environments with low corrosiveness.
(1) Features and practical uses
| Grade | POSZPHT4 |
| Characteristics | On the basis of POSZPHT1, increase the content of Cr and Ni, and improve the workability and corrosion resistance. |
| Application | Decorative tubes, industrial tubes, and some shallow-drawn products. Such as shallow processing pots, indoor staircase handrails, elevators, mirror surfaces, brushed surfaces, and other surface-processed products. |
(2) Main chemical composition: (unit: wt%)
| Specification | C | Mn | Cr | Ni | Cu | Other |
| POSZPHT4 | ≤0.08 | 5.5-7.2 | 16.0-17.7 | 3.5-4.4 | ≤2.0 | N： 0.06-0.18 |
(3) Mechanical properties
| Specification | YS（Mpa） | TS（Mpa） | EL（%） | HV | Remark |
| POSZPHT4 | 370 | 840 | 58 | 200 | 1.0t |
| 304 | 285 | 710 | 58 | 165 | 1.0t |
(4) Use cases
300 Series Stainless Steel
301(L)
Contrast 304 contains low Ni, Cr, and high N components. According to the high strength that can be achieved by rough rolling, compared to Steel, Al has excellent high-temperature strength, fatigue strength, and corrosion resistance. It is used in trams to achieve lightweight and excellent stability. Performance and economy (301L)
Features and practical uses:
| Grade | 301(L) |
| Characteristics | –Compared with 301, excellent corrosion resistance |
| Application | –Insulation lunch box, thermos bottle, SINK BOWL, gas, BURNER parts for trams, internal and external installation of rail vehicles |
Chemical composition: (unit: wt%)
| Specification | C | Si | Mn | P | S | Cr | Ni | Other |
| TYPE 301 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0～18.0 | 6.0～8.0 | |
| TYPE 301L | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0～20.0 | 8.0～10.5 | N≤0.02 |
Mechanical behavior:
| Specification | YS（Mpa） | TS（Mpa） | EL（%） | Hv |
| TYPE 301 | ≥205 | ≥520 | ≥40 | ≤218 |
| TYPE 301L | ≥215 | ≥550 | ≥45 | ≤218 |
Use case:
304(L)
As the basic steel of the AUSTENITE series, it has excellent corrosion resistance, heat resistance, low-temperature strength, and mechanical properties. It does not harden after heat treatment and has almost no magnetism.
Features and practical uses:
| Difference | 304 | 304L |
| Characteristics | –Austenitic basic steel, the most widely used; –Excellent corrosion resistance and heat resistance; –Excellent low-temperature strength and mechanical properties; –Single-phase austenite structure, no heat treatment hardening phenomenon | –Compared with 304, excellent corrosion resistance |
| Application | –1-2 categories of tableware, exterior materials, building materials, auto parts, –Medical equipment, chemistry, food technology, fiber industry, –Ship parts | – Equipment in the chemical, coal, and petroleum industries that require high resistance to intergranular corrosion, –Construction materials, heat-resistant parts, and parts that are difficult to heat treat |
Chemical composition: (unit: wt%)
| Specification | C | Si | Mn | P | S | Cr | Ni |
| TYPE 304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | ≤18.0-20.0 | ≤8.0-10.5 |
| TYPE 304L | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | ≤18.0-20.0 | ≤8.0-10.5 |
Mechanical behavior:
| Specification | YS（Mpa） | TS（Mpa） | EL（%） | Hv |
| TYPE 304 | ≥205 | ≥520 | ≥40 | ≤200 |
| TYPE 304L | ≥175 | ≥480 | ≥40 | ≤200 |
Use case:
304J1
Compared to 304, it ensures excellent moldability (composite moldability, deep processing, excellent processing lag performance, etc.), and excellent aging resistance to cracking
Features and practical uses:
| Grade | 304J1 |
| Characteristics | –Excellent formability and aging crack resistance |
| Application | –Insulation lunch box, thermos bottle, SINK BOWL, gas, BURNER parts |
Chemical composition: (unit: wt%)
| Specification | C | Si | Mn | P | S | Cr | Ni | Other |
| TYPE 304J1 | ≤0.08 | ≤1.70 | ≤3.00 | ≤0.045 | ≤0.030 | 15.0～18.0 | 6.0～9.0 | Cu：1～3 |
Mechanical characteristics:
| Specification | YS（Mpa） | TS（Mpa） | EL（%） | Hv |
| TYPE SUS304J1 | ≥155 | ≥450 | ≥40 | ≤200 |
Formability:
| Distinguish | Thickness(mm) | Er(mm) | LDR | CCV | Aging crack limit |
| TYPE 304J1 | 0.6 | 13.2 | 2.14 | 26.3 | 3.3 |
| TYPE 304 | — | 12.8 | 1.98 | 27.0 | 2.6 |
Use case:
321
The carbon stabilizing element Ti is added to the 304 steel grade to suppress the sharpening of the grain boundary. It was developed for the purpose of using in the sharpening range (450 ℃ ~ 850 ℃). After adding Ti, the defect (Ti-streak) is more common in the steel grade.
Features and practical uses:
| Grade | 321 |
| Characteristics | –Use in the sharpening range (450 ℃-850℃) |
| Application | –Boiler heat exchangers, pipes, expansion joints, and other welding parts/equipment that cannot be heat treated after assembly |
Chemical composition: (unit: wt%)
| Specification | C | Si | Mn | P | S | Cr | Ni | Other |
| TYPE 321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00～9.00 | 9.00～13.00 | Ti： ≥ 5 × C% |
Mechanical behavior:
| Specification | YS（ Mpa ） | TS（ Mpa ） | EL（%） | Hv |
| TYPE 321 | ≥205 | ≥520 | ≥40 | ≤200 |
Use case:
304N
It is made by adding 0.1%~0.25% nitrogen to 304 steel. Due to the addition of nitrogen, the strength of the steel is increased, but the plasticity is not reduced, so the thickness of the parts can be reduced. At the same time, the corrosion resistance of steel has also been improved.
Features and practical uses:
| Grade | 304N |
| Characteristics | –S is reduced and N is added to increase the strength; the addition of high N has excellent corrosion resistance |
| Application | –Construction materials, street lights, water pipes, cooling pipes for power plants |
Chemical composition: (unit: wt%)
| Specification | C | Si | Mn | Ni | Cr |
| TYPE 304N | ≤0.050 | ≤0.75 | ≤2.00 | 8.0～10.5 | 18.0～20.0 |
Mechanical behavior:
| Specification | YS（Mpa） | TS（Mpa） | EL（%） | Hv | Remark |
| TYPE 304N | 355 | 697 | 49 | 183 | Cold Rolled 1.5t |
Use case:
300SCC
The addition of Si, Cu, and W to 304 steel greatly improves the stress corrosion resistance and pitting corrosion resistance of the steel compared with 304, while the plasticity is not reduced, and its performance is basically equivalent to that of 316L. Therefore, it can replace 316L in environments such as heat exchangers and hot water boilers.
Features and practical uses:
| Grade | 300SCC |
| Characteristics | –SCC resistance compared to 304 is more than 2 times; pitting corrosion potential compared to 304 is more than 1.3 times |
| Application | –Heat exchanger, boiler |
Chemical composition: (unit: wt%)
| Specification | C | Si | Ni | Cr | Cu |
| TYPE POS300SCC | ≤0.070 | 1.5 | 8.5 | 18.5 | ≤2.0 |
Mechanical behavior:
| Specification | YS（Mpa） | TS（Mpa） | EL（%） | Hv | Remark |
| TYPE POS300SCC | 310 | 650 | 55 | 164 | Cold Rolled 0.6t |
Use case:
400 Series Stainless Steel Grade
With the widespread application of stainless steel in various industries, 400 series stainless steel has gradually become the first choice for many application scenarios due to its unique performance and cost-effectiveness. As ferritic stainless steel, the 400 series stainless steel performs well in terms of price, corrosion resistance, heat resistance, and mechanical properties, and is particularly suitable for customers with limited budgets and special requirements for material properties.
Emphasize the Characteristics of 400 Series Stainless Steel
High-Cost Performance: Compared to 300 series stainless steel, 400 series costs less, especially 430, 409, etc., has relatively low cost and is suitable for projects with tight budgets.
Excellent Corrosion Resistance: Although the corrosion resistance is slightly lower than that of the 300 series stainless steel, the 400 series performs well in specific environments, such as dry rooms or food-grade equipment.
Good Heat Resistance: For example, the 410 and 420 series have good high-temperature resistance and are suitable for use under high-temperature conditions.
Magnetic Properties: 400 series stainless steel contains a ferrite structure and is magnetic, which is suitable for applications with special requirements for magnetism.
At Huaxiao Metal, we offer a wide range of 400 series stainless steel products and can provide custom specifications based on your needs. We also have a large inventory of stainless steel for you to choose from. Please contact us for more product prices and stock products, etc.
Target Application Areas
Automotive Industry: 409 and 439 are often used in automotive exhaust systems and other high-temperature components because of their heat resistance and corrosion resistance, and their relatively low cost.
Home Appliance Manufacturing: For example, 430 stainless steel is widely used in kitchen equipment, dishwashers, refrigerator door panels, etc., which have high appearance requirements but are cost-sensitive.
Architectural Decoration: 400 series stainless steel is also commonly used in doors, windows, decorative panels, etc. in the field of architectural decoration because of its excellent mechanical properties and corrosion resistance.
Tableware and Kitchenware: Series 410 and 420 are often used in the manufacture of knives and tableware because of their high hardness and good wear resistance.
No matter how many stainless steel products you need, Huaxiao Metal has a large inventory of 400 series stainless steel materials to provide you with the right one.
Why Choose Huaxiao Metal?
Huaxiao Metal will be your reliable partner when choosing a stainless steel supplier. We are committed to providing high-quality stainless steel products to customers around the world and have the following advantages:
Excellent Quality Assurance: All products meet international standards such as ASTM and DIN, ensuring that customers receive the highest standard of stainless steel materials.
Extensive Inventory and Customized Services: We have a wide range of spot inventory and can provide customized specifications and special surface treatments according to customer needs.
Fast Response and Global Delivery: No matter where you are, we can provide you with fast quotes, on-time delivery, and perfect after-sales service to ensure that your project goes on schedule.
Professional Technical Support: Our technical team is always available to answer your questions and provide suggestions on product selection, processing, and application to help you achieve your project goals.
If you are interested in our stainless steel products or want to know more about product specifications, inventory, and prices, please contact us directly.
